- Phase relation of Li2O-CoO-P2O5 ternary system and electrochemical behaviors of Co-base polyphosphates within this system
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The subsolidus phase relations in the Li2O-CoO-P2O5 system have been systematically investigated by means of X-ray diffraction (XRD) pattern. The results have confirmed 6 binary compounds, 5 ternary compounds and 17 three-
- Lin, Xinghao,Zhao, Yanming,Liang, Zhiyong,Yan, Danlin,Liu, Xudong,Wen, Mingming,Dong, Youzhong,Kuang, Quan
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- Synthesis, crystal structure and lithium ion conduction of Li 3BP2O8
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Single crystals of Li3BP2O8 were prepared by heating a mixture of starting materials with a Li : B : P molar ratio of 22 : 11 : 13 at 933 K in air and by cooling at a rate of -10 K h-1. The X-ray diffraction (XRD) reflections of a single crystal were indexed with triclinic cell parameters: a = 5.1888(5) A, b = 7.4118(7) A, c = 7.6735(7) A, α = 101.18(1)°, β = 105.07(1)°, γ = 90.34(1)° (space group P1 (no. 2)). In the crystal structure of Li3BP2O8, BO4 and PO4 tetrahedra share O atoms and form one-dimensional 1∞[BP2O 8]3- chains along the c-axis direction. A polycrystalline Li3BP2O8 bulk sample was synthesized by the solid state reaction of Li4P2O7 and LiPO 3 prepared from the starting materials in advance with H 3BO3 at 923 K. The lithium ion conductivities measured for the polycrystalline sample by the AC impedance and DC methods were 1.5 × 10-5 S cm-1 at 583 K and 6.0 × 10-8 S cm-1 at 423 K, respectively.
- Hasegawa, Toru,Yamane, Hisanori
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- Crystal structures and electronic properties for the over-lithiated and Li-Ag substituted phases of Li9V3(P2O 7)3(PO4)2 insertion electrode system
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For the Li9V3(P2O7) 3(PO4)2 insertion electrode system with a multiple-electron reaction, the over-lithiated phase LixV 3(P2O7)3
- Onoda, Masashige,Inagaki, Makoto,Saito, Hiroaki
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p. 220 - 227
(2014/12/09)
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